Should be possible

Moin, not necessary during the week. From Friday to Sunday it would make sense. Sometimes it works like that ... good luck. At the bar itself is always something free ... have fun in HH.

About 16 you have to be after 22 clock already. A certain dress code is also necessary.

We went there without a reservation

Why not just inquire directly there? 😉 Simply because of the reservation you would have to call or email anyway.

Sporty elegant 😊 is a very cozy bar and especially the view 👍 from about 22 clock (depending on the weekday) it is quite crowded, but you can also book

It is not possible to smoke in the bar. There is also no terrace. You would have to go upstairs to smoke and smoke in front of the hotel.

By email or phone

A reservation is possible here: https://www.empire-riverside.de/de/kontakt/tischreservierung/?restaurant=skyline-bar-20up#formular I consider that you will get a table in such a short time, but it is worth a try. Otherwise you still have the opportunity to take a seat at the bar, but unfortunately you sit with your back to the windows.